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Optical Engineering

Application of micro-Raman spectroscopy for fight against terrorism and smuggling
Author(s): Salvatore Almaviva; Sabina Botti; Antonio Palucci; Adriana Puiu; Frank Schnürer; Wenka Schweikert; Francesco Saverio Romolo
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Paper Abstract

We report the results of Raman measurements on some common military explosives and explosives precursors deposited on clothing fabrics, both synthetic and natural, in concentration comparable to those obtained from a single fingerprint or mixed with similar harmless substances to detect illegal compounds for smuggling activities. Raman spectra were obtained using an integrated portable Raman system equipped with an optical microscope and a 785-nm laser in an analysis of <1  min . The spectral features of each illicit substance have been identified and distinguished from those belonging to the substrate fabric or from the interfering compound. Our results show that the application of Raman spectroscopy (RS) with a microscope-based portable apparatus can provide interpretable Raman spectra for a fast, in-situ analysis, directly from explosive particles of some μm 3 , despite the contribution of the substrate, leaving the sample completely unaltered for further, more specific, and propedeutic laboratory analysis. We also show how the RS is suitable for detecting illegal compounds mixed with harmless substances for smuggling purposes or for counterfeiting activities.

Paper Details

Date Published: 29 April 2014
PDF: 8 pages
Opt. Eng. 53(4) 044113 doi: 10.1117/1.OE.53.4.044113
Published in: Optical Engineering Volume 53, Issue 4
Show Author Affiliations
Salvatore Almaviva, ENEA (Italy)
Sabina Botti, ENEA (Italy)
Antonio Palucci, ENEA (Italy)
Adriana Puiu, ENEA (Italy)
Frank Schnürer, Fraunhofer-Institut für Chemische Technologie (Germany)
Wenka Schweikert, Fraunhofer-Institut für Chemische Technologie (Germany)
Francesco Saverio Romolo, Univ. degli Studi di Roma La Sapienza (Italy)

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